Sound design on the film was managed by PopMark Media co-founder Kevin Hill at his downtown Catonsville Studio Unknown, and included location and in-house Foley, sound effects editing, ambient sound, voice effects, and mixing. For additional authenticity, Hill and sound engineer Matt Davies traveled to the Hagerstown house where the film was shot to capture location audio that played a crucial role in the film.

Twitch Film called the sound mix "strong and aggressive." And horror blog Bloody Disgusting praised Hill's work as critical to the film's success: "Without taking anything away from Lodge's performance, the sound design truly IS the movie; it's trickled with creepy hoof stomps and horse snorts throughout."

The feature debuted at the Toronto Film Festival on September 14th.

PopMark offers marketing/promotion, custom music/music production, and audio post production and audio production services to filmmakers, musicians/bands, and businesses/organizations. PopMark's Studio Unknown is the audio post production division of the company.